CN102403763A - Quick double-pistol charging system and method for electric motor coach - Google Patents

Quick double-pistol charging system and method for electric motor coach Download PDF

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Publication number
CN102403763A
CN102403763A CN2011103338660A CN201110333866A CN102403763A CN 102403763 A CN102403763 A CN 102403763A CN 2011103338660 A CN2011103338660 A CN 2011103338660A CN 201110333866 A CN201110333866 A CN 201110333866A CN 102403763 A CN102403763 A CN 102403763A
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China
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cradle
relay
current
charging
negative pole
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CN2011103338660A
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CN102403763B (en
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代幼文
蒋黎明
田野
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Chongqing Hengtong Electric Bus Power System Co Ltd
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Chongqing Hengtong Bus Co Ltd
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Abstract

The invention discloses a quick double-pistol charging system and method for an electric motor coach, relating to a charging device for an electric car. The quick double-pistol charging system for the electric motor coach comprises a first charging base, a second charging base, a control system, a first charging base positive electrode relay, a second charging base positive electrode relay, a first charging base negative electrode relay, a second charging base negative electrode relay, a first current sensor, a second current sensor and a power battery set, wherein the two current sensors are used to detect the current flowing through the two charging bases; when the current is unequal, a management system controls a charger to timely adjust, so that the charging current is ensured to flow through the two charging bases in a balanced manner, and the current flowing through each charging relay is consistent. The quick double-pistol charging technology solves a problem of large-current balance conduction when the electric motor coach is quickly charged, shortens the charging time, and provides a powerful support for the use and popularization of the electric motor coach.

Description

Electric motor coach rush-harvesting and rush-planting quick charging system and method
Technical field
The present invention relates to a kind of charging device of electric automobile, especially relate to a kind of electric motor coach rush-harvesting and rush-planting quick charging system and method.
Background technology
Along with the propelling of China's energy-saving and emission-reduction policy, the quantity of new forms of energy passenger vehicle will get more and more, particularly by power-actuated pure electric coach; Because of adopting driven by power, it does not use fuel oil; Can reduce the dependence of China effectively, can limited oil be used for prior aspect, and electric motor coach does not have the waste gas that produces when internal-combustion engines vehicle is worked petroleum resources; Not producing exhaust emission, is the best product of realizing traffic aspect energy-saving and emission-reduction.
Electric motor coach adopts normal charge method and battery pack quick change method to accomplish replenishing of the energy content of battery usually at present.Adopt the normal charge mode,, therefore have the drawback that charging device quantity is many, floor space big, investment is big because the charging interval is long, a chassis must be joined a charging device and a charging station.Adopt battery pack quick change mode, a chassis must be equipped with 2 Battery packs, and need change battery pack 1-2 times every day, and the quick-changing type charging station need be equipped with the battery robot that changes the outfit, and has also therefore that equipment is many, management difficulty is big, floor space is big, invests big drawback.Though at present a lot of relevant enterprises have been done many effort at the electric motor coach electric energy aspect replenishing, the problem that the electric motor coach electric energy replenishes the aspect can not access basic solution.
Summary of the invention
The technical problem that the present invention will solve is: a kind of electric motor coach rush-harvesting and rush-planting quick charging system that can make big current balance conduction is provided.
Another technical problem that the present invention will solve provides a kind of fast charge method that can improve charging rate.
To achieve these goals, the invention provides a kind of electric motor coach rush-harvesting and rush-planting quick charging system, comprise first cradle and second cradle; Said first cradle, said second cradle are connected with control system through the CAN bus; Said control system is connected with the anodal relay of first cradle, the anodal relay of second cradle, and said control system is controlled the break-make of the anodal relay of said first cradle, the anodal relay of said second cradle; Said control system is connected with the first cradle negative pole relay, the second cradle negative pole relay, and said control system is controlled the break-make of the said first cradle negative pole relay, the said second cradle negative pole relay; Control system is connected with first current sensor, second current sensor, and said control system is controlled said first current sensor, said second current sensor gets into the current detecting state; The positive pole of first cradle is connected with the positive pole of power battery pack through the anodal relay of first cradle; The negative pole of first cradle is connected with the input of the said first cradle negative pole relay, and the output of the said first cradle negative pole relay connects the negative pole of said power battery pack through said first current sensor; The positive pole of said second cradle is connected with the positive pole of said power battery pack through the anodal relay of said second cradle; The negative pole of said second cradle is connected with the input of the said second cradle negative pole relay; The output of the said second cradle negative pole relay is connected with said second current sensor, and said second current sensor connects the negative pole of said power battery pack through said first current sensor.
Preferable, said control system is connected with said power battery pack through the CAN bus.
Preferable, said control system is connected with anodal main relay, negative pole main relay, and said control system is controlled the break-make of said anodal main relay, said negative pole main relay; The positive pole of said power battery pack is connected with the input of said anodal main relay, outwards exports positive current through the output of said anodal main relay; The negative pole of said power battery pack is connected with the input of said negative pole main relay through said first current sensor, outwards exports negative current through the output of said negative pole main relay.
Preferable, the positive pole of said power battery pack is connected with the input of preliminary filling relay; The output of said preliminary filling relay is connected with the output of said anodal main relay, is provided with preliminary filling resistance between said power battery pack and the preliminary filling relay.
The present invention also provides a kind of fast charge method based on electric motor coach rush-harvesting and rush-planting quick charging system, may further comprise the steps:
A, first cradle, second cradle send charging signals to control system 3;
B, control system are controlled the anodal relay of first cradle, the anodal relay closes of second cradle; Control system is controlled the first cradle negative pole relay, the second cradle negative pole relay closes;
C, charging current is sampled; When the size of current of second cradle equal total current 1/2 the time carry out next procedure; When the size of current of second cradle less than the total current size 1/2 the time, the charging total current is constant, charger increases the electric current of second cradle and reduces the electric current of first cradle, equals 1/2 of total current up to the size of current of second cradle; When the size of current of second cradle greater than the total current size 1/2 the time, the charging total current is constant, charger reduces the electric current of second cradle and increases the electric current of first cradle, equals 1/2 of total current up to the size of current of second cradle;
D, calculating SOC; Said SOC is the battery electric quantity of power battery pack; During SOC ﹤ 100%, continue charging; During SOC=100%, control system is sent the charging END instruction through first cradle and second cradle to charger, the charger complete charge.
Preferable, to voltage, the temperature sampling of cell in the said power battery pack; Whether voltage, pressure reduction, temperature or the temperature difference that said control system detects cell in the said power battery pack transfinite; When arbitrary the transfiniting of voltage, pressure reduction, temperature or the temperature difference of cell in the said power battery pack; Control system is sent the adjustment instruction through said first cradle and said second cradle to charger, and charger reduces the charging total current; , voltage, pressure reduction, temperature and the temperature difference of cell in the said power battery pack continue charging when all not transfiniting.
In sum; Owing to adopted technique scheme; The present invention has following beneficial effect: adopt two current sensor senses to flow through the electric current of two cradles eventually, when electric current does not wait, in time adjusted by management system control charger; Guarantee balanced the flowing through two cradles, make the electric current that flows through every charge relay consistent of charging current; Rush-harvesting and rush-planting quick charge technology has solved the problem of big current balance conduction when having solved the electric motor coach quick charge, shortened the charging interval, and promoting for the use of filling the formula electric motor coach soon provides strong support.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the circuit diagram of the embodiment of the invention 1.
Fig. 2 is the circuit diagram of the embodiment of the invention 2.
Fig. 3 is the circuit diagram of the embodiment of the invention 3.
Fig. 4 is a flow chart of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Embodiment 1: as shown in Figure 1, a kind of electric motor coach rush-harvesting and rush-planting quick charging system comprises first cradle 1 and second cradle 2; Said first cradle 1, said second cradle 2 are connected with control system 3 through the CAN bus; Said control system 3 is connected with the anodal relay 6 of first cradle, the anodal relay 7 of second cradle, the break-make of the anodal relay 6 of said said first cradle of control system 3 controls, the anodal relay 7 of said second cradle; Said control system 3 is connected with the first cradle negative pole relay 8, the second cradle negative pole relay 9, the break-make of the said first cradle negative pole relay 8 of said control system 3 controls, the said second cradle negative pole relay 9; Control system 3 is connected with first current sensor 10, second current sensor 11, and said first current sensor 10 of said control system 3 controls, said second current sensor 11 get into the current detecting states; The positive pole of first cradle 1 is connected with the positive pole of power battery pack 12 through the anodal relay 6 of first cradle; The negative pole of first cradle 1 is connected with the input of the said first cradle negative pole relay 8, and the output of the said first cradle negative pole relay 8 connects the negative pole of said power battery pack 12 through said first current sensor 10; The positive pole of said second cradle 2 is connected with the positive pole of said power battery pack 12 through the anodal relay 7 of said second cradle; The negative pole of said second cradle 2 is connected with the input of the said second cradle negative pole relay 9; The output of the said second cradle negative pole relay 9 is connected with said second current sensor 11, and said second current sensor 11 connects the negative pole of said power battery pack 12 through said first current sensor 10.
After two charging rifles insert first cradle 1, second cradle 2 respectively; First cradle 1, second cradle 2 send charging signals to control system 3; The anodal relay 6 of control system 3 controls first cradle, anodal relay 7 closures of second cradle; The control system 3 control first cradle negative pole relay 8, the second cradle negative pole relay, 9 closures; Control system 3 control first current sensor 10, second current sensor 11 get into the current detecting states, and charger begins to power battery pack 12 chargings, and first current sensor 10, second current sensor 11 detect the electric current through separately respectively; And send detection information to control system 3; Under normal circumstances, the size of current that flows through second current sensor 11 be flow through first current sensor 10 size of current 1/2, when detect the size of current that flows through second current sensor 11 be not flow through first current sensor 10 size of current 1/2 the time; Control system 3 is sent electric currents adjustment instruction through the CAN connection to first cradle 1, second cradle 2; First cradle 1 and second cradle 2 are passed to charger with electric current adjustment instruction, and charger adjustment charging current size guarantees the current balance conduction.
Embodiment 2: as shown in Figure 2; The structure of present embodiment and embodiment 1 are basic identical; Different is: said control system 3 is connected with said power battery pack 12 through the CAN bus, and when control system 3 detected electric weight in the power battery pack 12 and is full of, control system 3 was sent the charging END instruction through the CAN bus to first cradle 1 and second cradle 2; The END instruction of will charging of first cradle 1 and second cradle 2 is passed to charger, the charger complete charge.Voltage transfinites in control system 3 detects power battery pack 12, pressure reduction transfinites, during temperature over-range, send adjustment instruction through first cradle 1 and second cradle 2 to charger by control system 3, and charger reduces the charging total current.
Embodiment 3: as shown in Figure 3; The structure of present embodiment and embodiment 1 are basic identical; Different is: said control system 3 is connected with said power battery pack 12 through the CAN bus; Said control system 3 is connected with anodal main relay 4, negative pole main relay 5, and said control system is controlled the break-make of said anodal main relay 4, said negative pole main relay 5; The positive pole of said power battery pack 12 is connected with the input of said anodal main relay 4, outwards exports positive current through the output of said anodal main relay 4; The negative pole of said power battery pack 12 is connected with the input of said negative pole main relay 5 through said first current sensor 10; Output through said negative pole main relay 5 is outwards exported negative current, and the positive pole of said power battery pack 12 is connected with the input of preliminary filling relay 13; The output of said preliminary filling relay 13 is connected with the output of said anodal main relay 4, is provided with preliminary filling resistance 14 between said power battery pack 12 and the preliminary filling relay 13.
As shown in Figure 4, a kind of fast charge method based on electric motor coach rush-harvesting and rush-planting quick charging system may further comprise the steps:
A, first cradle 1, second cradle 2 send charging signals to control system 3;
B, the anodal relay 6 of control system 3 controls first cradle, anodal relay 7 closures of second cradle; The control system 3 control first cradle negative pole relay 8, the second cradle negative pole relay, 9 closures;
C, charging current is sampled; First current sensor 10, second current sensor 11 detect the electric current through separately respectively; And send detection information to control system 3, when detect the size of current that flows through second current sensor 11 be not the total current size 1/2 the time, control system 3 is sent electric currents adjustment instruction to first cradle 1, second cradle 2; First cradle 1 and second cradle 2 are passed to charger with electric current adjustment instruction, charger adjustment charging current size; When the size of current that flows through second current sensor 11 less than total current size 1/2 the time; The charging total current is constant; Charger increases the electric current of second cradle 2 and reduces the electric current of first cradle 1, equals 1/2 of total current up to the size of current of second cradle 2; When the size of current that flows through second current sensor 11 greater than total current size 1/2 the time; The charging total current is constant; Charger reduces the electric current of second cradle 2 and increases the electric current of first cradle 1, equals 1/2 of total current up to the size of current of second cradle 2;
D, calculating SOC (state of charge, state-of-charge), said SOC is the battery electric quantity of power battery pack 12; During SOC ﹤ 100%, continue charging; During SOC=100%, control system 3 is sent the charging END instruction to charger, the charger complete charge through first cradle 1 and second cradle 2.
Voltage, temperature sampling to the interior cell of said power battery pack (12); Whether voltage, pressure reduction, temperature or the temperature difference that said control system 3 detects cell in the said power battery pack 12 transfinite; When arbitrary the transfiniting of voltage, pressure reduction, temperature or the temperature difference of cell in the said power battery pack 12; Control system 3 is sent the adjustment instruction through said first cradle 1 and said second cradle 2 to charger, and charger reduces the charging total current; , voltage, pressure reduction, temperature and the temperature difference of cell in the said power battery pack 12 continue charging when all not transfiniting.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. an electric motor coach rush-harvesting and rush-planting quick charging system is characterized in that: comprise first cradle (1) and second cradle (2); Said first cradle (1), said second cradle (2) are connected with control system (3) through the CAN bus; Said control system (3) is connected with the anodal relay (6) of first cradle, the anodal relay of second cradle (7), the break-make of the anodal relay (6) of said first cradle of said control system (3) control, the anodal relay of said second cradle (7); Said control system (3) is connected with the first cradle negative pole relay (8), the second cradle negative pole relay (9), the break-make of the said first cradle negative pole relay (8) of said control system (3) control, the said second cradle negative pole relay (9); Control system (3) is connected with first current sensor (10), second current sensor (11), and said control system (3) control said first current sensor (10), said second current sensor (11) get into the current detecting state; The positive pole of first cradle (1) is connected with the positive pole of power battery pack (12) through the anodal relay of first cradle (6); The negative pole of first cradle (1) is connected with the input of the said first cradle negative pole relay (8), and the output of the said first cradle negative pole relay (8) connects the negative pole of said power battery pack (12) through said first current sensor (10); The positive pole of said second cradle (2) is connected with the positive pole of said power battery pack (12) through the anodal relay of said second cradle (7); The negative pole of said second cradle (2) is connected with the input of the said second cradle negative pole relay (9); The output of the said second cradle negative pole relay (9) is connected with said second current sensor (11), and said second current sensor (11) connects the negative pole of said power battery pack (12) through said first current sensor (10).
2. electric motor coach rush-harvesting and rush-planting quick charging system according to claim 1 is characterized in that: said control system (3) is connected with said power battery pack (12) through the CAN bus.
3. electric motor coach rush-harvesting and rush-planting quick charging system according to claim 1 and 2; It is characterized in that: said control system (3) is connected with anodal main relay (4), negative pole main relay (5), and said control system is controlled the break-make of said anodal main relay (4), said negative pole main relay (5); The positive pole of said power battery pack (12) is connected with the input of said anodal main relay (4), outwards exports positive current through the output of said anodal main relay (4); The negative pole of said power battery pack (12) is connected with the input of said negative pole main relay (5) through said first current sensor (10), outwards exports negative current through the output of said negative pole main relay (5).
4. electric motor coach rush-harvesting and rush-planting quick charging system according to claim 3 is characterized in that: the positive pole of said power battery pack (12) is connected with the input of preliminary filling relay (13); The output of said preliminary filling relay (13) is connected with the output of said anodal main relay (4), is provided with preliminary filling resistance (14) between said power battery pack (12) and the preliminary filling relay (13).
5. fast charge method based on electric motor coach rush-harvesting and rush-planting quick charging system is characterized in that may further comprise the steps:
A, said first cradle (1), said second cradle (2) send charging signals to control system 3;
B, charger begin to charge to power battery pack (12);
The anodal relay (6) of said first cradle of said control system (3) control, anodal relay (7) closure of said second cradle; The said first cradle negative pole relay (8) of said control system (3) control, said second cradle negative pole relay (9) closure;
C, charging current is sampled;
When the size of current of second cradle (2) equal total current 1/2 the time carry out next procedure; When the size of current of second cradle (2) less than the total current size 1/2 the time, the charging total current is constant, charger increases the electric current of second cradle (2) and reduces the electric current of first cradle (1); When the size of current of second cradle (2) greater than the total current size 1/2 the time, the charging total current is constant, charger reduces the electric current of second cradle (2) and increases the electric current of first cradle (1);
D, calculating SOC; Said SOC is the battery electric quantity of power battery pack (12); During SOC ﹤ 100%, continue charging; During SOC=100%, control system (3) is sent the charging END instruction to charger, the charger complete charge through first cradle (1) and second cradle (2).
6. fast charge method according to claim 5 is characterized in that: to voltage, the temperature sampling of the interior cell of said power battery pack (12); Whether voltage, pressure reduction, temperature or the temperature difference that said control system (3) detects the interior cell of said power battery pack (12) transfinite; When arbitrary the transfiniting of voltage, pressure reduction, temperature or the temperature difference of cell in the said power battery pack (12); Control system (3) is sent the adjustment instruction through said first cradle (1) and said second cradle (2) to charger, and charger reduces the charging total current; , voltage, pressure reduction, temperature and the temperature difference of cell in the said power battery pack (12) continue charging when all not transfiniting.
CN201110333866.0A 2011-10-28 2011-10-28 Quick double-pistol charging system and method for electric motor coach Active CN102403763B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014000649A1 (en) * 2012-06-27 2014-01-03 Shenzhen Byd Auto R&D Company Limited Charging system, vehicle comprising the same and method for controlling charging vehicle with the same
CN106787056A (en) * 2016-12-14 2017-05-31 深圳市科华恒盛科技有限公司 A kind of rush-harvesting and rush-planting intelligence trickle charge system and its control method
CN109532523A (en) * 2019-01-09 2019-03-29 安徽安凯汽车股份有限公司 A kind of power battery electrical system of compatible charging in many ways
CN109910652A (en) * 2019-04-01 2019-06-21 享奕自动化科技(上海)有限公司 Double charging pipette tips and automatic charging system

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CN202309142U (en) * 2011-10-28 2012-07-04 重庆恒通客车有限公司 Electric motor coach double-gun quick charging system

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CN202309142U (en) * 2011-10-28 2012-07-04 重庆恒通客车有限公司 Electric motor coach double-gun quick charging system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014000649A1 (en) * 2012-06-27 2014-01-03 Shenzhen Byd Auto R&D Company Limited Charging system, vehicle comprising the same and method for controlling charging vehicle with the same
US10086716B2 (en) 2012-06-27 2018-10-02 Byd Company Limited Charging system, vehicle comprising the same and method for controlling charging vehicle with the same
EP2867975B1 (en) * 2012-06-27 2020-04-15 BYD Company Limited Charging system, vehicle comprising the same and method for controlling charging vehicle with the same
CN106787056A (en) * 2016-12-14 2017-05-31 深圳市科华恒盛科技有限公司 A kind of rush-harvesting and rush-planting intelligence trickle charge system and its control method
CN106787056B (en) * 2016-12-14 2018-07-24 深圳市科华恒盛科技有限公司 A kind of rush-harvesting and rush-planting intelligence trickle charge system and its control method
CN109532523A (en) * 2019-01-09 2019-03-29 安徽安凯汽车股份有限公司 A kind of power battery electrical system of compatible charging in many ways
CN109910652A (en) * 2019-04-01 2019-06-21 享奕自动化科技(上海)有限公司 Double charging pipette tips and automatic charging system
CN109910652B (en) * 2019-04-01 2021-11-19 享奕自动化科技(上海)有限公司 Double-charging gun head and automatic charging system

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Patentee before: CHONGQING HENGTONG BUS Co.,Ltd.